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The hydrosphere encompasses all water on Earth, including salt water in oceans (97.5%) and fresh water (2.5%), with the majority of fresh water being frozen in ice and glaciers. The hydrosphere interacts with other Earth systems, such as the atmosphere and geosphere, through processes like the water cycle and weathering. The atmosphere, composed mainly of nitrogen and oxygen, protects life on Earth and is structured in layers, with the troposphere being the layer where life exists.

Author

Muhammad Afeef Hassan

Language

EN